biostudies-literatureKertzscher CDeutsche Forschungsgemeinschafte202500344https://www.ebi.ac.uk/biostudies/studies/S-EPMC11979686biostudies-literatureUnknown31(21)We study strong optical coupling and the formation of hybrid polaritons by a donor-acceptor pair of J-aggregated dyes separated by up to 11 μm in a tunable Fabry-Pérot resonator. Fitting a phenomenological Hamiltonian to the white light transmission spectra of different cavity-J-aggregate-configurations, for which several hundred spectra were recorded sequentially as function of cavity length, allows us to determine coupling energies as a function of the effective cavity distances. The theoretical analysis shows that certain hybrid polaritons contain contributions from both dyes, making this system a promising platform for polariton-mediated energy transfer at very large distances.Chemistry (Weinheim an der Bergstrasse, Germany)Global Spectral Analysis of Polaritonic Coupling of Multiple Organic Dyes to a Tunable Fabry-Perot Resonator Operating with Mirror Separations up to 10 μm.PMC11979686ME 1600/13-3Meixner AJKeck JMauch MKertzscher CfalseGlobal Spectral Analysis of Polaritonic Coupling of Multiple Organic Dyes to a Tunable Fabry-Perot Resonator Operating with Mirror Separations up to 10 μm.We study strong optical coupling and the formation of hybrid polaritons by a donor-acceptor pair of J-aggregated dyes separated by up to 11 μm in a tunable Fabry-Pérot resonator. Fitting a phenomenological Hamiltonian to the white light transmission spectra of different cavity-J-aggregate-configurations, for which several hundred spectra were recorded sequentially as function of cavity length, allows us to determine coupling energies as a function of the effective cavity distances. The theoretical analysis shows that certain hybrid polaritons contain contributions from both dyes, making this system a promising platform for polariton-mediated energy transfer at very large distances.2025-01-01T00:00:00Z2025 Apr2025-07-13T03:04:33.671Z2025-07-13T03:04:33.671ZS-EPMC119796863999226210.1002/chem.202500344